All Developer & Writing Tools

Beautify and format JSON with syntax highlighting

Validate JSON syntax and catch errors instantly

Minify JSON by removing whitespace to reduce size

Decode and inspect JSON Web Tokens client-side

Generate v4 UUIDs in bulk with one click

Encode and decode Base64 strings instantly

Test regular expressions with live match highlighting

Encode and decode URL components and query strings

Format and beautify SQL queries for readability

Beautify and format HTML markup with indentation

Beautify and minify CSS stylesheets

Convert Unix timestamps to human-readable dates

Generate SHA-256, SHA-512, MD5, CRC32, and HMAC digests

Compare code and text with unified diff patch generation

Parse cron expressions, humanize schedules, and project runs

Convert between YAML and JSON documents in real time

Convert data storage sizes and CSS typography units

Live GitHub Flavored Markdown editor and HTML compiler

Generate technical placeholder text and user fixtures

Generate API tokens, NanoIDs and calculate password entropy

Convert JSON to TypeScript interfaces and type definitions

Convert cURL commands to JavaScript Fetch, Axios, Python & Go

Convert JSON payloads into Zod validation schemas and TypeScript types

Convert SVG code into clean React (JSX/TSX) components

Calculate Unix file permissions, octal numbers & symbolic notation

Convert between CSV and JSON with delimiter controls and auto-flattening

Repair malformed JSON, unquoted keys, Python dicts, and trailing commas

Convert JSON arrays and nested objects to RFC 4180 CSV tables

Convert CSV spreadsheets and tabular data into JSON arrays

Convert JSON objects and arrays into clean indented YAML

Convert YAML manifests and config files into structured JSON

Calculate IPv4 subnets, CIDR masks, network & broadcast IPs, and usable host ranges

Encode and decode HTML entities, special characters, and numeric code points client-side

Parse RFC 3986 URLs, inspect components, and edit query strings & UTM parameters

Test package version ranges (^, ~, >=, ||), preview version bumps, and compare precedence

Convert HTML markup into clean Markdown with table support and token reduction for LLMs

Convert docker run commands into clean docker-compose.yml specifications

Generate secure passwords and Diceware passphrases with NIST SP 800-63B entropy metrics

Generate SEO meta tags, Open Graph cards, and Next.js metadata with live search & social previews

Parse User-Agent strings, detect browser, OS, engine & device, audit bot crawlers & generate Client Hints

Generate sortable 128-bit Crockford Base32 ULIDs, decode timestamps, and convert to UUIDs

Generate RFC 6238 time-based 2FA one-time passwords, test authenticator secrets & preview QR codes

Compute HMAC signatures (SHA-256/512) and verify GitHub, Stripe, Slack & Shopify webhook deliveries

Convert binary, hex, decimal, and octal with BigInt precision, interactive 32/64-bit flipper & bitwise logic

Convert between XML and JSON documents with attribute preservation, CDATA & namespaces

Design multi-layer smooth box shadows and frosted glassmorphism UI with real-time CSS & Tailwind export

Test and evaluate JSONPath expressions (RFC 9535) against JSON payloads with live node highlighting

Convert .env files into JSON, YAML, Docker Compose, Kubernetes ConfigMap & Secret, with 1-click secrets masking

Generate Apache APR1-MD5 & SHA-1 .htpasswd hashes, verify existing lines, and build Basic Auth headers

Convert SVG vectors into CSS background-image, mask-image, Tailwind classes & Data URIs with live preview

Build, send and debug HTTP requests with cURL import and export

Count words, characters, sentences and reading time

Count chars with Twitter, SMS and platform limits

Convert between camelCase, snake_case, UPPER and more

Remove duplicate lines from any list instantly

Sort lines alphabetically, numerically or by length

Humanize AI text into natural writing — private, on-device

Rephrase sentences and paragraphs in multiple tones

Ask DevToolkit Hub docs with local or Hugging Face RAG

Chat with your notes using a RAG pipeline

Summarize long text with Hugging Face BART

Sentiment and zero-shot themes with HF models

Compare meaning with MiniLM embeddings

Convert titles, articles, and product names into clean, SEO-friendly URL slugs

Generate QR codes for URLs, text, email and more

Compress images client-side without quality loss

Resize images to exact dimensions or percentages

Pick colors and convert between HEX, RGB and HSL

Generate scannable Wi-Fi login QR codes with printable guest cards and zero password uploads

Calculate GPA and CGPA from grades and credit hours

Full-featured scientific calculator with history

Calculate percentages, discounts and changes

Check your resume ATS compatibility and keyword score

Generate professional GitHub README.md files